MacObserver compared it to other well known, larger than life buildings and objects and found that the upcoming Apple Spaceship HQ will be bigger than the Empire State Building, the Pentagon, a U.S. Navy Blimp, a WWII battleship and a supertanker. Surprised? You shouldn't be, as the diameter of the alien circle is estimated to be 1615 feet. See their measurements here. [MacObserver]

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